Re: [PATCH v4 8/9] RISC-V: KVM: Virtualize per-HART AIA CSRs

Andrew Jones
2023-04-04T16:31:47Z

On Tue, Apr 04, 2023 at 09:04:51PM +0530, Anup Patel wrote:
> The AIA specification introduce per-HART AIA CSRs which primarily
> support:
> * 64 local interrupts on both RV64 and RV32
> * priority for each of the 64 local interrupts
> * interrupt filtering for local interrupts
>
> This patch virtualize above mentioned AIA CSRs and also extend
> ONE_REG interface to allow user-space save/restore Guest/VM
> view of these CSRs.
>
> Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> ---
> arch/riscv/include/asm/kvm_aia.h | 88 ++++----
> arch/riscv/include/uapi/asm/kvm.h | 7 +
> arch/riscv/kvm/aia.c | 322 ++++++++++++++++++++++++++++++
> 3 files changed, 382 insertions(+), 35 deletions(-)
>

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>